Means for increasing buoyancy



Aug. 28, 1928. 1,682,630

F. G. SARGENT MEANS FOR INCREASING BUOYANCY Filed Jan. 30 1928 WE 7M Patented Aug. 28, 1928.

UNITED STATES FREDERICK G. SARGENT, OF WESTFOBD, MASSACHUSETTS MEANS FOR INCREASING BUOYAN CY.

Application filed January 30, 1928. Serial No. 250,379.

The principal objects of this invention are provide for the creation of a partial zacuum in an enclosed space for assisting 1n be moving of an apparatus, particularly ipwardly, and to provide an efiicient means ?or creating a reduced air pressure.

Other objects and advantages of the inrention will appear hereinafter.

Reference is to be had to the accompany- .n drawings in which Tig. 1 is a side view of an apparatus con- ;tructed in accordance with this invention;

Fig. 2 is an edge elevation, partly in sec- Lion;

Fig. 3 is a plan;

Fig. 4 is an edge elevation showing a mod Lfication, and

Fig. 5 is a side elevation of another form.

The invention is shown in Figs. 1, 2 and 3 as applied to a pair of vertical receptacles )r enclosures 10. Each one of these 18 :losed at the bottom and open at the top. They are arranged side by side, secured toget-her, and between them is located a fan easing 11 in which is a fan or blower 12. This blower has an outlet 13 which is arranged horizontally and an inlet 14 at each side from the receptacles or casings 10. The details of the blower and its casing are not important except for the relative location and arrangement of 'the inlets and outlet. The outlet 13 is at the rear, if this device is applied to a vehicle such as an airplane or the like. The air inlets 14 are formed of such size that they will not admit all the air that the blower can take care of at the speed at which it is run, which of course necessitates exhausting air from the lower portion 20 of each casing 10, as stated. It will, of

course, be understood that in place of the fan' some other appliance for the same purpose can be employed as for example a disc blower.

When the fan is running, the air is drawn in through the open upper ends of the two casings and through the inlets 14 into the blower and out through the outlet 13. A partial vacuum is formed in the lower part of the two casings,'making a difference in the air pressure on the outside and inside surfaces of the bottoms of these casings, tending to force the casings upwardly. The fan casing is so constructed that no air can go to the blower or out except as above described.

In this way the fact that the blower, havclaims.

creased It can be used in connection with locomotion in the air and also under water. There is also a tendency to provide a horizontal motion due to the direction of the air currents out of the outlet which also can be utilized for assisting in that action.

In the form shown in Fig. 4, the outlet 13 can be constructed to point down so as to get a further reaction from the blower and upward pressure to assist in aviation.

The form shown in Fig. 5 is a single construction. I prefer to construct the corners 15 and 1G in the form of gentle curves to avoid obstruction to the air currents and provide for freer operation.

Although I have illustrated and described only-three forms of the invention I am aware of the fact that other modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the Therefore, I do not wish to be limited to all the details of construction herein shown and described, but what- I do claim is 1. Ina device for the purpose described, the combination with a tall vertical casing open at the top and closed at the bottom, of a blower rotatableon a horizontal axis and connected with the casing at a point substantially midway between the top and the bottom by an air inlet passage and having an outlet passage extending to the front or rear, whereby the operation of the blower will produce a reduction of air pressure in the bottom of the. casing and thus a (litterence in air pressure on the outside and inside of the bottom wall of the casing to tend to lift it.

2. In a device of the character described, the combination with two casings arranged in vertical position, each closed at the bottom and sides and having an opening at the top for the admission of air, said casings being spaced apart and each having an outlet passage near the center, said passages facing each other, of a blower casing located between said casings, said passages constituting opposite inlets for the blower casing, and a blower in the casing for drawing in air through the inlets, for the purpose described. 3. In a device of the character described,

the combination with two casings arranged in vertical position, each closed at the bottom 5 and sides and having an opening at the top for the admission of air, said casings being spaced apart and each having a passage near the center, of a blower casing located between said casings, said passages constituting the inlets for the blower casing, and a blower In the casing adapted to be operated at such speed as to be capable of drawing in more air than would normally pass through the inlets in a horizontal direction for the purpose described.

In testimony whereof I have hereunto aflixed my signature.

FREDERICK G. SARGENT. 

